ML20039C325
| ML20039C325 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 12/15/1981 |
| From: | Bagale M, Kim C, Leddick R WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20039C321 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, GO3-81-2834, NUDOCS 8112290228 | |
| Download: ML20039C325 (100) | |
Text
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- MITMENT CONTROL-WO/A tvPPss coHRISPONDENcE No. o8 b -- -
TING-WO/A E FILES-WO/A ALBERT /NRC-W/d C00DY-W/A I DOBSON-WO/A DORAN-WO/A Docket Numbers 50-508 and 50-509 , g GLASSCOCK/280-W/A . g LOVE-WO/A . E 0'SULLIVAN/27 -W/A m PECK-W/A QUAMME-WO/A' ecember 15, 1981 C ( SLUKA-W/A G03-81-2834 x TRAPP-WO/A . WERLE-1?0/A w 50RENSEN/440-W/A g (d U. S. Nuclear Regulatory Commission, Region V E g Office of Inspection and Enforcement 1450 Maria Lane, Suite 260 k ,S Walnut Creek, California 94596-5368 s Attantion: Mr. B. H. Faulkenberry b Chief, Reactor Construction Projects 3 h g .<m
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Subject:
PROJECT NOS. 3 AND 5 E, P DOCKET NUMBERS 50-508 AND 5 9 \ $ % FINAL REPORT OF Pr t u'AL 1 ^F 50:,55]e) j G $ ITT-GRINNELL PIPE .u " R TIF C Ln. . $s(0/N #31) E U
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r q In accordance with the provision o. 0 TR50.55(e), Region V was notj- k4 . fied that potential deficiencies, c ated with pipe hanger stiff cl amps, were nd. q
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. Attached t final report which is considered by the Supply System ~
to satisf 'or.My resolve the subject condition. The report includes a response tg ar' iti nal items of concern raised by the fiRC. g b,'9-m_ S u.- you hav r' questions or desire further information, please -. co. ac me trec y. m I }\j A M f'.; E
} \' R. S. Leddick/1000 N
E Program Director, WNP-3/5 a w ' E DRC/tt ,8 c. U O J ,g Attachment
,5 jj io cc: J. Adams - NESCO-WO/A I E r!i D. Smithpeter - BPA-WO/A 9 ,8 2 Ebasco - New York-WO/A 3 S8 WNP-3/5 Files - Richland-WO/A " '--
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s 7 ) WASHINGTON PUBLIC ?CRER SUPPLY SYSTEM WPPES NUCLEAR PROJECTS NO. 3&5 l j ENGINEERING FINAL RE?CRT ITT-GRINNELL STIFF CLAMPS DIVIATICN/NCN-CCMPLIANCE 031 ) ' SEPTEMBER 13, 1981 REVISED DECEMBER 8, 1981 i 1 9 PREPARED 3Y: . '9/[ ML SaCALE. e CMKl.Mm ]t,: 1 0's m4'r' / 1
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i J S1!PPLDIENT No. 1 - 11/3/81
, (Incorporated as Revised 12/8/31) RJ
INDEX PAGE Introduction . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . 2 Theory of Operation. . . . . . . . . . . . . . . . . 3 A. Description of the Deficiedeies and Items of Concern . . . . . . . . . . . . . . . . 4
- 3. Analysis of the Safety Implication . . . . . . . 6 '
R1 C. Corrective Actions Taken . . . . . . . . . . . . 9 SUPPLDIEhT . . . . . . . . . . . . . . . . . . . . . 13 ITT-Grinnell Installation Instructions for Figure 215 Stiff Clamp Asse=bly Original Design . . . . . . ATTACHMEhT 1 . Stif f Clamp NCR No. 140?.0 . . . . . . . . . . . . . ATTACHMEhT 2 }' Results of. Stiff Cln=p Strap Inspection . . . . . . ATTACHMEST 3 Material Certifications. . . . . . . . . . . . . . . ATTACHMENT 4 Mechanical Properties of Strap Material . . . . . . ATTACEMEhT 5 Modified Figure 215 Stiff Cla:p Installation Procedure and Load Capacity Data Sheet Revision 4. . ATTACHMEhT 6 R1 Stiffness and Qualification Testing of the Modified Figure 215 Stiff Clamp . . . . . . . . . . . . . . . ATTACHMEhT ,7 Figure 215 Stiff Clanp Modified Design Torque Relaxation Test . . . . . . . . . . . . . . . . . . ATTACEMEST 8 Figure 215 Stiff Cla=p Modified Design Ultimate g Torque Test . . . . . . . . . . . . . . . . . . . . ATTACHMEhT 9 Figure 215 Stiff Clamp Material Change-Out Program For '4;F-3/5 Project. . . . . . . . . . . . . . . . . ATTACHMEhT 10 Cross Reference - ITT-Grinnell & WNP-3/5 Engineering Reports . . . . . . . . . . . . . . . . . . . . . ATTACHMEST 11 D L
INTRODUCTION On May 20, 1981 ra installing contractor reported significant tie red bending on the C-Orinnell Figure 215 stif f clamp assembly (MK No. FDC-1151 Rl/R2) when insts;;ed in accordance with the manufacturer's instructions. Engineering asses:, rent confirmed the tie rod bending and further revealed that a relaxatic: =f the specified 240 ft. Ib. torque had occurred after installation. Fa._!:re to achieve full and equal tension in the strap ' loop around the : unnion was also evident, as well as apparent binding between the tie ::d and trunnion which resulted in a bending moment - , that caused defo .acion of the tie rod. (See Attachment 1 for original design configura:i:n). These nonconforming conditions reoccurred in other stif f clamp asser: lies during mockup installations performed under the supervision of th e Engineer and' LIT-Grinnell at the site on June 1 and 2, 1981. Failure to achie.e and maintain proper pretensioning of the straps will reduce the rigidi:y of the stif f clamp assembly thus impa. iring it's ability to perfo= it's design function. The Grinnell Figore 215 Stiff Clamp assembly is designed to provide a stiffness five (5) times greater than that of a snubber assembly. In the event that the stiff clamps do not function as designed the integrity of the piping system cannot be substantiated by :he dynamic analysis methods utilized for the '4NP-3/5 Project. Approxirately 4,000 stif f cleap assemblies are employed in the design of safety and non-safety related support systems,for each unit. , These supports are located throughout the T.2roine 3uilding, Reactor )) Auxiliary Building and Reactor Building. On June 4, 1981 the Engineer initiated NCR No. 14020 to formally notify , the supplier of the nonconforming conditions (See Attachment 2). On , June 11, 1931 the NRC was notified of the deficiencies in accordance with the provisions of 10CFR50.55(e). During the course 'of the Engineering study other potential deficiencies and design questions arose. These additional items involved crack-like indications (tears) on the edges of some of the straps, and questions of ASME code material application. ITT-Grinnell bas issued a complete detailed report on all identified deficiencies and items of concern. Copies.of that report are available at the '4NP-3 /5 Project site. This report sue.marizes each of :hese items and their resolution. A cross reference of the attachmeats to this report and the appendixes in the ITT-Grinnell report is provided in Attachment 11. Subsequent to the issuance of this report on September 15, 1981 additional items of concerns were raised by the Owner and the NRC. R1 These additional items are addressed by Supplement and incorporated by revision to this report dated December 8,1981. 3 e _1_
4 1 l CONCLUSION In May 1981, during initial installation of the ITT-Grinnel stiff clamp Figure 215 at the 'iNP-3/5 site, the installing contractor experienced j' difficulties in achieving prescribed pretensioning of these pipe supports. The dif ficulties experienced involved bending of the tie rods and relaxa-
- tion of the prelcad (torque) . Subsequent evaluation by the Engineer (Ebasco- Services, Inc.) and the Supplier (ITT-Grinnell) confirmed deficiencies involving tie rod bending and torque relaxation, and further , ,g revealed a potential for strap breakage. Tears were found in the edges on some of the clamp straps and questions arose as to ASME Code accept - -
ability of the riveted strap connections and the material used in the - ' fabrication of these straps. A detailed Engineering assessment was made of the materials, design, fabrication, inspection, qualification testing and installation procedures. As a result of this assessment, nodifications to the design were imple-mented, revised installation procedures were developed and code cases initiated to allay concerns for code applicability and acceptance of the rivet and strap materials application. ITT-Grinnell has signified, and the Engineer has concurred, that with the satisfactory implemantation of the remedial steps described in this Engineer-ing Final Report as revised December 8,1981, the ITT-Grinnell stiff R1 clamp Figure 215 will meet the intent of the applicab1'e codes, NRC h Directives and the Engineer's design specifications and is therefore acceptable for use on the WNP-3/5 Project. s e 9 6
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THEORY OF OPERATION OF FIG. 215 STIFF CLAMP DESIGN RECCIRD'E'T R1 Washington ?ublic Power Supply System's Technical Specification 3240-4 for Piping and Piping Supports Paragraph 4.lly requires that " clamps used as tha non-integral attachment to the piping component in a snubber / strut asse=31y shall have as a minimum a spring rate greater than five times the s pring rate of the snubbing device." { i ORIGINAL DESIGN R1 In response to this requirement ITT-Grinnell designed the Fig. 215 Stiff cla:p as shown in Attachment 1. To obtain the desired stiffness the strap assemblies are pre-loaded by turquing the hex nuts against the hardened rocker washer which pulls on the straps to provide enough pre-tension so that the load required to lift the yoke (Item #1) off the pipe is equal to the faulted load of the largest snubber / strut assembly that could be attached to that clamp. This means that the deflection g caused by the load applied to the load pin (Ite= #8) will be a function of a load pin and yoke deflection until the f aulted load of the clamp is exceeded. Under normal conditions, the torquing process should cause the rocker washers and trunnions to rotate so that they align themselves on the tie rods. This ensures that the torque applied at the tie rods goes into supplying the required pre-tension to ensure proper function. MODIFIED DESIGN As a result of the concerns identified with the original design (described in Section A of this report) it was subsequently determined by ITT-Crinnell that a modification to the original stiff clamp configuration was required. R1 This modification, as described in Section C and Attachment 6 of this report, ' meets the Design Requirements set forth above. s
s N. DESCRIPTION OF THE DEFICIENCIES AND ITEMS OF CONCERN )
- 1. BENC!NG OF THE TIE RODS Tie Eod bending was identified during installation of initial stiff clamp assemblies and confirmed during subsequent mockups at the site. Sending was attributed to higL friction between the strap loop, rocker washer and the trunnion. This friction locks the trunnion within the strap loop and prevents the ,
trunnion from maintaining true alignment with the tie rod as - q the assembly is tightened. The trunnion rotates with the strap locp as the assembly is drawn together causing the trunnion to iroart a. bending moment to the tie rod.
- 2. TORCUE RELAXATION Torque relaxatien was identified during initial installation and g subsequent mockups at the site. The cause of this relaxation is attributed to the high friction between the trunnion and the strap and between the rocker washer and strap. This high fric-tion does not allow the strap loop to achieve equal loading beycnd the points of tangency with the trunnion and rocker washer. Subsequent slippage of the strap between the trunnion and rocker washer will result in a loss of stiff clamp rigidity and attendent torque relaxation. ITT-Grinnell has advised that
% torque , relaxation did not occur during original' qualification testing.
- 3. 3RCKIN STRA?S .
- a. Strap failures (breaks) occurred during the mockup testing 1 at the site and during subsequent investigative tests conducted by ITT-Grinnell at their facilities as follows:
(1) One (1) 0.080" thick Aeroquip strap failed during mockup testing at the site. The failure occurred at less than specified torque on. a non-lubricated assembly while being installed in accordance with prescribed procedures. (2) Further tests by ITT-Grinnell at their ~4arren facilities ' resulted in failure of 0.080" Aeroquip and RICO straps at less than specified torque values when lubricants were applied to friction surfaces other than tie rod thread surfaces.
- b. All breaks at less than specified torque occurred at the line of rivet holes.
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- c. ITT-Grirmell has advised tFiT~n'o strap f ailures occurred at less ::an specified torque and rated load during original qualification tests.
6 EDGE INDICATIONS h Crack-like indications (tears) have been observed in some straps . f.s P at both the site and in the ITT-Grinnell shop. jfd U.. x These indications were found on the outer edge of the strap q
- a. i
in line with the rivet holes. -
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Indicati:ns were found with the unaided eye and only in p b. 0.080" thick straps supplied by Aeroquip. (Attachment 3) f Y
- c. A careful study of the manufacturing procedures used by '
Aeroquto and RICO revealed a significant difference in the methods used by the two fabricators in producing the rivet . S holes. RICO drilled and machine counterbored for the rivet i heads. Aeroquip punched rivet holes and " coined" the countersink. " Coining" is accomplished by cold impact which b
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moves the material from the countersink area and displaces tt outwardly. This creates a slight bulging at the edge of . r the strap in the area of the rivet pattern as shown in D Attachment 3. This bulging and subsequent edge conditioning U
. (grinding) is judged to be the source of the tears.
I i; '
- 5. MATERIALS - CODE APPLICATIONS i t
During the detailed investigation of the originally identified ~ q deficiencies, additional questions arose concerning the code p acceptability of the strap and rivet materials as specified in the stiff clamp design. (See Attachment 4). i i
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- a. The strap material was being purchased to ASTM A-693 GR 630 (a sheet and strip specification) in the annealed condition; and, due to the fact that ITT-Grinnell was performing opera-tions (age hardening) which altered the material characteris- -
tics, it was then recertified to SA 566 GR 630 in the H 1075 condition. (Attachment A) This specification is a bar speci-fication, and ITT-Grinnell used the option provided in NF 2126
._ which allows the use of " materials outstde the limits of size or thickness given in any specification in Section II..."
for recertification of this material. Some concerns arose over the acceptability of this approach.
- b. The rivet material called for in the ITT-Grinnell stiff clamp This material, which is design drawings was SA 153 Grade 660.
3 '\ j 'a botting specification, requires that the product be annealed t
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- b. (con't) at 1650 ? for 2 hours (minimum) and hardened at 1325 F for 16 hours. The material received had been annealed and heat treated in accordance with Nattonal Aerospace Specification NAS-1199 (See Attachment 4) which is different from the requirements [
of SA 453. The material as provided is, because it is not y fully hardened, easier to " head" and less likely to crack k during the heading operation, and is therefore judged to h be better suited as a rivet material. ' [ h*
- 3. ANALYSIS OF THE SAFETY IMPLICATIONS t a
- 1. TIE ROD BENDING Tie rod bending, as identified in the field, was also observed during ITT-Grinnell's qualification of this product. This bending had no effect on the ability of the Figure 215 stiff clamp to meet the load rating of ASME Section III Subsection NF, or stiff-ness requirements of the Design Specification. Therefore, it is ITT-Grinnell's Engineeting judgement that this item should not be tensidered a detriment to operation of this clamp. Also, because the clamp will be able to support the highest load it was designed for (the faulted load of the largest snubber / strut that could be attached to it) there are no safety implications due to bending of the tie rods.
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- 2. TCRCUE RELAXATICN
- a. The torque relaxation identified as a deficiency will also have no effect on the load carrying capability of the clamp, however, there would be a reduction in the stiffness of the clamp. The torque is applied to th. tie rods to provide a pre-load in the straps that causes the straps to pull the yoke down onto the pipe with a force equal to the highest faulted load cf the largest snubber / strut that could be attached to it. This pre-load establishes a stress level that is equivalent to the stress level that the straps would be subjected to if they were installed on the pipe uncorqued and then subjected to the faulted load of the clamp. When properly installed, the yoke of the clamp does not lift off the pipe until the load applied to the clamp exceeds the faulted load. Thus, there is no additional strain in the straps until this load is reached, and the straps do not see any increase in tensile stress until the load applied to the clamp exceed- the faulted load. If there is a relaxa-tion in the torque, the yoke of the clamp will lift off the ptpe at some load icwer than the faulted load of the clamp, but the stress in the straps at faulted load will be identical, regardless of torque level. Therefore, the ultimate failure
[\ load will be unchanged by dif ferences in torque levels.
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- b. Althougm a relaxation of the pre-1oad would not reduce the ultimar: load capacity of the assembly, the reduction in stif'-=-= below the specified factor of 5 would impair the i
l ability of the stiff clamp to perform its design function. In the event that the stiff clamps do not function as designed, the in egrity of the piping system cannot be substantiated by the nynamic analysis methods utilized for the WNF-3/5 Project. . I
- 3. 3RCKEN STE-J .
- a. The brt<en strap in itself would appear to present an obvious safety ,: rrblem; howevar, when reviewed in light of the infor-matien p reviously presented, the safety problem associated with a atrap failure is essentially an installation problem. ' j The re ason f or this is that if a clamp is fully pre-loaded by ter:uing to any pre-st res s , (and it has been shown in IIT-Grinnell's quali fication testing that the faulted load of the clamp - applied to the bands - will not cause a tensile ;y failure), the straps will net see any additional tensile 2 stress until the p: -load is exceeded. Therefore, if a clamp is installed at any corque level it will not fail at less than faulted Icad. If the installed torque is Iftoothehigh, the installed clamp vill remain stif f over a higher rant 2.
torque is too low, the stif f ness over the desired range may be icwer than specification requirements. However, if a clamp can be installed, and it has been proven that the failure that occurred is a icw probability event, it will be able to hold the design load; therefore, from a support failure point of - view there is no safety implication associated with a broken strap, once installed. j
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- b. Three (3) randomly selected straps and one (1) broken scrap (
were tested for mechanical properties and found to conform - 1 y to the requirements of the material specification (SA 564 Typ2 630 Age Hardened at 1075 ). Test results are shown in } Attachment 5. Although these properties as measured are noticeably higher than the minimum values required by the specification, they are r2asonably close to the values typically displayed by this material according to information rece ived f rca ARMCO. This can be seen from the folicwing i ccmparison. SA 366 As tested Typical ( rec' d min. ) faver12e) (aRMCO) . i I 143 173 163 Ultimate Strench (KSI) Yield Strength (KSI) 123 161 130 Elongation (%) 13 (min) 11 3 D Hardness (Rc) 31 (min) 36-00 37 H l
% c. The strap asse=blies were age hardened at approximately 10500F to 1075oF as evidenced by the furnace chart and heat treat-ment certification in Attachment 4
- d. The stif f clamp assembly is load rated in accordance with t the requirements of ASME Section III Subsection NF using code i Thus, the stiff clamp load R1 ;
allowable stresses, not actuals. ratin3 will be valid regardless of the overstrength displayed ' [ by individual straps. _'.
. 4 EDGE INDICATICSS Edge indicaticas were detected by visual examination af ter strap failure occurred during torquing in the field. It has now been :
determined that these indications are surficial tears that have ' no detectable effect on the overall strength or integrity of the strap. This determination has been established based on the following:
- a. NDE using flourescent magnetic particle methods has shown the tears do not extend beyond the edge of the strap to any significant degree.
- b. Some of these tears have been ground out to determine their deptn. On these samples the depth of the tear was 0.011 7%
' it.ch into the overall band width of 1.75 inches.
- c. Two (2) metallurgical specimens have been mounted flat, polished from the strap top surface down and etched to clearly establish the depth of the tear from the edge inward. These specimens shew the tears are in fact surficial.
- d. Straps with these tears have been tested and in all cases the straps developed their load rating. Cne assembly was deliber-ately tested with all four ('4) scraps having edge tears. The assembly developed its full load rating without failure,
- e. Straps with edge tears have been tested to failure. In scme cases failure occurred in locations without edge indications, that is, the failure occurred outside the riveted section.
- f. Tear propagation due to fatigue (cycling) has been evaluated and determined to not be a problem. Cyclic stresses will not occur be-ause the straps are prestressed by torquing to a level that precludes additional strain until the faulted load is exceeded.
- g. Tear propagation due to corrosion should not be a problem since the strap material has good corrosion resistance in
,= thts environment (normal building air atmosphere).
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- 5. MATERIALS - :DE APPLICATION The concern regarding the code acceptability of the strap and rivet materials, when reviewed in light of the testing results and the ,
load rating analysis performed, does not present a safety concern - in that all frame sizes have been tested to insure that they meet R1 i. the strength requirements of- the Code and the Design Specification. g C Ii
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C. CORRECTIVE ACTIONS TAKEN
. 1. MODIFIED CFSIGN
- a. ,DESCRIPTICN OF NEW DESIGN As a result of the concerns identified with the original Figure 215 stiff clamp design, it was subsequently determined by ITT-Grinnell that a modification to the original stiff
- clamp design was required. (Attachment 6) ,
The design modification proposed was as follows:
- 1. The rocker washer assembly was removed. ;
g 2 .. The trunnion design was modified so that the two (2) straps on each side of the clamp assembly utilized a single trunnion rather than two (2) separate trunnions.
- 3. The trunnion material was changed frem SA-36 to SA-193 Gr. B7.
4 The location of the tie rods was changed so that pre-torque is applied in-board to the straps.
- 5. Hardened steel washers were added under the tie-rod hex nuts.'
Because of this proposed modification to the original design, ITT-Grinnell performed requalification testing on the new design to insure that the changes made to eliminate the iden-tified problems would also maintain the integrity of the over-all design and stiffness characteristics required by the Project , Design Specification. In addition, because of the modified { method of applying the pre-load straps in the new design, new torque levels had to be established which would obtain / the necessary pre-load and stiffness requirements. Details of ITT-Grinnell's requalification test results and procedures are provided in Attachment 7.
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- b. 3EN:!NO OF TIE RODS
~ _/ Tie Rod bending discovered during installation and subsequent testing of the original Figure 215 clamp has been eliminated with the modified clamp design de' scribed above. Removal of the rocker washer elimin?tes the binding between tne trunnion and straps and reduces the excessive friction at this point which was preventing the trunnion from rotating freely about the rocker - washer and causing the tie rod to bend. In addition, it was found during ITT-Grinnell's requalification teat, that the applied torque needed to achieve design requirements was significantly less than those originally specified (due to removal of the binding / friction problem), which is also a factor in eliminating the tie rod bending. A comparison of the torque values specified for the originaland modified Figure 215 stiff clamps shows the following: REQUIRED TORQUE VALUES (rt. Lbs.) FRA}!E SIZE ORIGINAL DESIGN MODIFIED DESIGN 1 70 25 2 70 35 3 70 40 G 240 120 [h - 3 240 130 6 2GO 170
- c. TOROUE RELAXATION Torque relaxation identified during installation and subse-quent :esting of the original Figure 215 stiff clamp design has been eliminated with the modified clamp design described above.
Removal of the rocker washer and modification of the trunnion ( and tie rod design relieves the excessive friction forces brought about from binding of the strap between the rocker { washer and trunnion. This allows for equal strap tensioning and load distribution with essentially no resultant torque relaxation. For clamp sizes where nornal torque relaxation may occur, ITT-Grinnell has added additional torque to the straps to insure that specified stiffness requirements are met. Details of the requalification test results and procedures " regarding torque relaxation are provided in Attachment S.
- d. SRCKEN STRAPS j.
The strap failure which occurred during a mockup installa- l tion in the field is postula.ed to have resulted from a sudden relaxation of the excessive friction forces between the trunnion and :ie rod which in turn caused a tensile over-
}*\ load at the rivet pattern. The potential for a strap failure ;
to occur during installatien has been eliminated -ith the L. _ a
b ,
- d. (con *:)
modified design through the removal of the excessive friction forces a: the trunnion and strap loop location, reduction of the applied torque values and a revised installation procedure. The significant reduction in required installation torques are as evidenced in C.I.b. above. Attachment 9 shows that if the modified installation procedure is followed significan:
, safety margins will' exist between the required installation '
torque and the failure torque.
- 2. ECCE INDICATIONS Although the edge indications have been evaluated as surficial j
tears and thus not significant, all 0.080 inch thick straps pro-duced by Aeroquip will be visually inspected with the unaided i eye and indications (tears) so disclosed will not be acceptable. l All 0.030 inch straps now on site with these tears will be replaced. ITT-Crinnell has initiated action to specifically inspect all 0.0E0 inch straps produced by Aercquip and has ccmmitted to ship only those straps which have been inspected and found to be free of these tears. The program for inspection, change-out and documen:acion is set forth in A :achment 10.
- 3. WNP-3/5 STIFF CLAMP CHANCE-CUT PRCCFAM D
The def'iciencies identified in this report for the ITT-Grinnell ' Figure 215 stiff clamp furnished to the *iNP-3/5 project will be corrected and documented in accordance with :he program set forth in Attachment 10 for all ASME Section III, Subsection NF and seismically' analyzed ANSI 331.1 stiff clamp ccmponent supports. L. MATERIALS - CCDE APPLICATIONS To allay any concerns relative to ASME Code acceptability for the strap and rivet materials as used in these stiff clamp assem-blies, ITT-Grinnell has requested ASME Code approval as fo11cws:
- a. For the strap ma:erial as purchased. ITT-Grinnell has requested that the sheet and strip material (ASTM A 693 Type 630, solution annealed, subsequently age hardened by ITT-Grinnell or sub-contractors to the M1075 condition) be added to code case N-279 Revision 2. This is being done to remove any !
concern that may exist over the re-certification to SA 566
- ype 630. I
- b. The rivet material supplied, while not conforming to the material specification called out on the drawings (SA053 Grade 660 Type A or 3), conforms to a National Aerospace Standard NAS-1199 which is included in Attachment 4 This b
- b. (con't)
Standard is specifically for rivets and the basic difference in the materials supplied from what was ordered is the heat treating. The material received is in a softer condition and : is judged to be better suited to the riveting process.
- Therefore, the corrective action in process is to have the 660 .
I type material added to Code Case N-249 in the "as-received" heat . treat condition, specifically, A286 Hi-Temperature Alloy - Heading Stock per Specification AMS 5737. Typical Certified Material Test Reports and heat ~ treatment records are included in Attachment i to this report. D . ) . O
SUPPLEMENT This supplecentary section is added to address coaments received f rom .; the Owner following the issuance of the Engineering Final Report dated _ Septenber 15, 1981. Comments received from the Owner reflected items from the NRC to address issues posed ,9 of Owner's concern and a request consultant (Reference letter to Owen C to the NRC by an indipendent3 and 5 Stiff Clamp Non-Compliance," dated Shackleton, Jr. , "WP?SS No. The following Owner and NRC items are responded September 8, 1981). to in this supplement: A. Evaluation of the Combined Ef fects of Dif ferential Thermal Expansion and Pre-Lead on the Stiffness of Figure 215 Stiff Clamp. R1 . B. Toughness Properties of SA564, TP630 Material at Elevated Temperatures ,
,m C. Localized Pipe Wall Stresses D. Probabilistic/ Reliability Analysis E. Code Cases.
e 9 l i i ; .. A. Evaluatien c f the Combined Ef fects of Dif ferential Thermal Expansion And Pre-Load on the_ Stiffness of the Figure 215 Stiff Clamp R1 ,
- q
- l. Introduction _
The SA5f4, TP630 strap material is a ferritic stainless steel kih [.- having s thermal coefficient of expansion similar to that of i c carbon steel. When installed with pretorquing on a stainless steel pipe having a higher coef ficient of thermal expansion, f l it will be subjected to increased tensile loading as the pipe The maximum te=pera:ure service rises to the service temperature. temperature for stainless s is 653 F. In accordance with the design rules of ASME Section III, ; Subsection NF-3000, the stresses due to thermal expansion are in .! treated as secondary stresses and may be combined within the
- limit cf 3S . However, concerns arose over the possibility that the thEr=al stresses, when combined with the stress due l ;
to the applied pre-load, may cause a condition where the actua r-yield strength of the If strap this caterial were to at the design happen, the temperature stiffness of pig F. may be exceeded. lower than anticipated in the cold the clamp would be somewhat condition, which may present a piping analysis problem. t J To evaluate this condition, ITT-Grinnell has performed a R1 detailed analysis of the combined thermal forand pre-load all Figure scrap 215 stresses in orJer to substantiate that stiff cla=p applications on UNP-3/5 the yield value, and therefore the stif fness requirement of the device, has not g been violated. di
~
]f.(
i h a
l I l
, I Evaluation of the Combined Effects of Differential Thereal Expansion l And Pre-Load on the Stif fness of the Figure 215 Stif f ClamR (Cont'd)
A. .
^
- 2. Method of Analysis ~5 Thermal stresses were calculated using the cross-sectional
' )$
- a. i;Q'j area of the strap at the rivet pattern, or the cross- F t. )
sectional area at the location of the actual failure 7b in the ultimate tests performed as part of ITT Grinnell's lj$2 Specifically, in the ultimate test, 1
~
- l. qualification of this product.the Frame Size 1 Figure 215 failed not~,in the yoke body at the load pin hole; however, for the purpose ..
of this analysis, the failure was assumed to have occurred in the slotted area of the strap. For the Size 4 Frame
' the failure occurred in the slotted area of the strap, and ..
for the Size The 5 Frame fw rivet line. actualthe ultimate strap failure occurred cross-sectional areas at at the - these locations were used for analysis purposes. b. To calculate stresses due to pre-load (the initial pre-torque .i applied to the cla=p) actual The test pre-load data wasapplied utilizedtoby ITT-the Grinnell in their analysis. clamp (via the straps) supplied enough force to preclude - separation of the clamp yoke and pipe until the faulted load was reached. This means that the stresses induced into the straps by torquing are equivalent to the dstresses with no
.that would be induced by applying the faulted loa j pre torque.
Therefore, by knowing the ultimate capacity ' of the clamp and assuming all failures occur in the straps, the applied prestress can be obtained Changes by a linear relation-in area need ship of faulted load to failure load. R1
?
not be ibcorporated because failure vill occur when the ; stress reaches its ultimate value, Also, whichchanges is a function of in geometry the area of the failure location. if are neglected because the outside surface of the pipe )- physically constrains the geometrytoofthe thestrap strappin, assembly and [i everywhere but at the attachment changes in this area will be insignificant. c. The stresses calculated, thermal and mechanical pre-stress, were then combined and compared to the actual yield i' strength of the strap material for the purpose of determining. I , whether any spring rate (stiffness) changes had occurred. Lowest actual room temperature yield strengths were utilized in the ITT-Grinnell thermal calculations as determined by records a review of all .040" and .080" strap material test and then adjusted for temperature, as shown below: ( Lowest Actual Yield Strength at Room Temperature: 150,950 psi =ry For .040" Material: 147,300 psi =f y For .080" Material: I .i
4 A. Evalu_t:fon c f the Combined Ef fects of Dif ferential Thermal Expansion
~
And F e-Load on the Stif fness of the Figure 215 Stif f Clamp. (Cont'd)
- 1. Ea hod cf Analysis (Cont'd)
Lowest Actual Yield Strength:
> hen adjusted for temperature:
for .040" straps - ' 650 F = 99.5 X 150,950 = 120,156 psi 125 i for .080" straps j
&yi
,650 F = -99.5 X 147,300 = 117,251 psi 125 1
)
A. Evaluation of the Ceciined Ef fects of Dif ferential Thermal Expansion _ And Pre-l.oad on the S.tif fness of the Figure 215 Stif f Clamp (Cont'd) ,, V g
- 3. Results of Analvsds T-Stresses in the straps due to preload (the torque needed to y a.
develop desirn stif fness) were calculated for each f rame i i size, with the following results: 0
~J.
Pre-Stress (pt,1)_ Frame Siza L e 1 45616 % 2 46777 I.1 3 57806 ! 4 62484 ' 5 78348 6 82046 This pre-stress represents the stress present in the straps, due to the t:rquing process, at .com temperature. It is independent sf piping material and constant throughout the - pipe sizes f or a specific f rame size, with the largest frame size having the highest preload (torque) stress,
- b. Stresses in the straps due to dif ferential thermal expansion of the pipe and clamp material were calculated by ITT-Grinnell.
These-calculatinns show that:
)
(1) Heavy vall piping, due to its higher radial stif fness, produces higher thermal expansion stress in the straps R1 than thin wall pipe of the sa=e size. (2) The largest pipe size in any frame group produces the highest thermal stresses. 1 From the findings established in (1) and (2) above thermal stressas were calculated for the largest frame sizes utilizing carbon steel and stainless steel heavy wall piping. The cases shown below were selected as bounding conditions for Figure 215 Stif f Clamp applications on WP-3/5. l l Frame Strap Pipe Dia/Sched Pipe Mat'l Oper Temp Thermal Stres.s_ Size Thickness 4 SS 350 F 29,931 psi i 6 .080" 24/160 l CS 650 F 26,635 psi f 6 . M0" 24/160 i i
A. Evaluation of the Combined Effects of Dif ferential Thermal Expansion _
- And Pre-Load cc the Stif fness of the Figure 215 Stif f Clamp (ccnt'd) j h 3. Results of Analysis (Cont'd) s
- c. Combining the preload stresses from Ai3.a above and the thermal expansion stresses from A.3.b above produces the follow'_ng results for the WNP-3/5 bounding cases:
Frame Strip Pipe Pipe Oper Combined Stresses Lowest Actual Thickness Dia/Ech Mat'l Temp Thermal + Preload Yield 0 Te=p* Size - '
.080" 24/1f0 SS 350 F 111,977 psi 117,251 psi 6
.080" 24/160 CS 650 F 108,681 psi' 117,251 psi 6
- Values calculated frc= lowest room temperature values in Certified Test Reports.
- d. Also, to validate the stress analysis performed it was necessary to establish the effective cross sectional area.
of the straps. This was accomplished based on evaluation of actual tensile test results, consistent with load rating methods, instead of those analytical methods outlined in Appendix XVII Paragraph 2283.2. Actual strap strengths t were established by tensile testing to failure with the following results: Test .040 Straps .080 Straps 1 10700 lbs 15400 lbs 2 10700 lbs 15200 lbs " 3 10650 lbs 15400 lbs 4 10900 lbs 15200 lbs ; 5 10800 lbs 15300 lbs , 6 9700 lbs 15300 lbs 7
--- 15300 lbs 8
--- 15750 lbs 9 16050 lbs 10 --- 16600 lbs 11 --- 15750 lbs
! 12- --- 15750 lbs l l The actual effective cross sectional area of the straps was established by using tha lowert values obtained from l the tensile tests divided by the lowest ultimate strengths l for the strap materials. In both cases (0.040" and 0.080" l l straps) the effective cross sectional area so determined was greater than the cross sectional areas used in the stress analysis. i l l i t-L - 1
p A. Evaluation of th2 Combined Effects of Differential Thermal Expansion p.1d Pre-Load of ne Stif fness of the Figure 215 Stif f Clamp _ (Cont'd)
- 4. Conclusic),
Based on IT~-3 rinne 11's evaluation of the combined stresses in the Figure O Stif f Clamp strap due te thermal and pre-load R1 conditions f:: Mi?--3/5 bounding casa conditions, it has been found that the yield strength of the strap will not be -
, exceeded and :here vill be no reduccion in the required stiffness of -he clamp as a result o.f these combined stresses.
?
4 9 g . f e l l l _
4 B. Toughness _ ?roperties of SA564, TP630 Material at Elevated Temperatures The consul: ant's letter of the NRC allud' de to some experience that indicates that SA564, TP630 material in long term use has experienced degradation in its impact properties and therefore should be limited to a maximum service temperature of 300 F. We find no such limitation in the ASME Code nor in the literature published by the material suppliers. Consequently, we are unable - ' to respond to this point due to lack of specificity. C. Localized Pipe Wall Stresses A detailed study of the local pipe wall stresses resulting f rom Stiff Clamp preload and differential thermal expansion is being , performed utilizing finite element analysis methods. These q calculated stresses are being evaluated with other piping loads ' in accordance with the piping design requirements of the applicable code. Since this matter relates to piping design and not to the R1 design of the Stiff Clamp, the concern will not be addressed in this report but will be treated in accordance with the rules [ governing the design of the piping systems. D. Probabilistic/ Reliability Analysis This product is classified as a standard component that has been. load rated in accordance with the procedures defined in ASME ' Section III Subsection NF-3262. In compliance with that procedure the weakest element has been identified for each frame size and the product has been load rated based on the limiting element as prescribed by the ASME Code. Therefor, a reliability analysis is not required and is outside the scope of the Code. E. Code Cases At the September 1981 ASME Code Meeting in New York, Code Cases N-71-11 and N-249-2 were submitted for ASME approval of the rivet and strap material specifications shown on the ITT-Grinnell Load Data Sheet Revision 3. Since formal ASME approval of these ] code cases may not occur until January 1982, Revision 4 of the LCD l has been issued with annotations of these pending cases. (See Attachment No. 6) iI R1 i 1 l
1 in I rj l 4 1 i s. f d i ATTACHMENT 1
;L ITT-GRINNELL INSTALLATION INSTRUCTIONS i)~
FIG. 215 STIFF CLAMP ORIGINAL DESIGN I l J [ i j e . t l L
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. Wrench tighten the hex suts in. sequence until the strapsMare sn p., . ~
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~
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. e . nJc 1.o. ,.- 4 ::.,a.. ,f ..,he.. remaining.
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nuts .to the required torque 'us..ing ,10". incremen. ts. . y f t.i.g - 8%*.y.styaptensign;throughout .the entire tightening procedure).*"P*!,.
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. 7.
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requir.ed. torques. - e. a I
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Attach the, applicable attachment to the...:: clamp frame with the load , . W l ..
- 8. , . . . .
. :.-g pin.(8). :. . ~ . . . . . - . - - .. -
.. .....w
. :. - .~
. . there is bendin'g of the tie rod during the .
' *- It will be evident that The amount of bending is in direct relation with (' '
l T * - torquing process. the amount of torque applied to the hex nut, and.This unless an interfer-was accounted ence problem eccurs ,this bending is allowable. affect the stiff . l for during the qualification testing and does not
~
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" ness or strength of the clamp.' -
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SUBdc.C'~i!O'N 'N 'r~- LO'AD CAPACITY DATA SHEET - . . . _
- l. GENERAL INFORMATION - -_ _ _ _
i ENGINEER'NG PARTS LIST (S): SU??O..T NAME: A-PE41-00000 , PE-41 Pipe Clang - Size 1-5 WPPSS Uni.ts 3 & 5 1d , CODE CLASSlFICATION C1.a , c 1,2. . .w s ,
, SUPPORT TYPE: Cc=ponenti Sta- _ '
L ad RacinS DESIGN TEM?ERATURE: 6500 . .
- r ! 6ES!GN PROCEDURE:
I
! SERV!CE LIMITS: Levels A,B,C,D & Design Loading t
3 - : .
]
- 2. CERTIFICATION <
a DATE: THE LOAD CAPACITY OF THIS CO?'?C.T.rf. i SUPPORT IS RATED IN ACCOROANcc ',ti.w. l ENGINEER:
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ER LOG SH R EC ERT! F ! CATION DATE DATE
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SUBSECTION NF . j LOAD CAPA. CITY DATA SHEET
- 4. COMI:ONENT SUPPORT INFORiGATION --
I MATERI AL SPECl FlCATION l ANALYSIS ! ITEM ' $l
~\
+
SAS,15 GR 65 or SA36 LoadRatiwg,[ . .e-Frane -', d .. ' 3A 193 GR B7, SA 664 Type' ' 630 Age Hardened @ 10750F f Load Pin (Fig.306/307 Size 35__only) Load Rating 4 ~
~j-SA 36 .
Secondary - or AISI 1010 Exempt per l Scacer NF 2121 (L) Member l t Truarc Exe pt per NF- Secondary I~ Retaining Ring 2121 (b Menhor .
~
' Load Rating, SA 193 GR 37 .
Strap Fins . ASME SK364 Type 630 . Straos , Load Raf.ing Condition 1075 . i ~ Load Ra;;iaf; j c. SA 36 or ASTM A 103 GR
- j. Irr: ._.:n. l1018* _
SA36 or C101S Case Hard- Load Rat:ine,_ ace..:cr ..asner
, ened to Roch:211 C-35-38 t l .
g.3e3
- SA307 GR 3 dr ASTM 307 Load Ratin;;,
GR A* 1 Load Rating '; SA 193 GR 37
! Tie Reds I ~
Load Rating f ASME SA433 GR 660 Ti;ats l Condition A or 3 l . f - I I l __ I i -j Al-3 i
! -
- Code Case 1644 i of
PAGS J OF > PE-41 STIFF CLMiP REV. 2 t t ; f . i
. s.
.~ >
. s ITT GRINNELL .
9 PIPE HAUGER DIVISION - QUALIFIED PRODUCTS ., - LOAD RATING - FPRIE SIZE MAXIMUM LOAD LBS. MINIMUM SPRING RATE l KIPS /IM i LEVEL LEVEL LEVEL . 1- - i A&B C D i e
- k. i 1 .~ ! 6000 8610 11520 325 h .
. 2 6000 8610 11520 325 1, -
I 3 6000 0610 11520 325
} 4 20700 24840 26700 1000 i !
l ~ i 5 20700 24340 26700 1000 t - 6 20700 24340 25700 1000 l I i s O Al-4
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? <x v v.-02 CEi TIFICATE OF CHCMICAL Ar4AL ts 3 s.ND TESTS E 'iYER ' S DATC DurER'S CRDER HC . VENDOR: 04/12/GO WAR- "527-H ARMCG INC. ,
DOX 600 SHIP REF NG' MILL ORDER NO GHIFFING DATE ri!DDLETOWN, CHIC 4GO42 20*5400 072929922-0000 10/03/B0 ( EULD TO: SHIFFED TO: E. Aii u .As. . N N c,o,- Ie u r. I.r in. t .LL p, r. 621 DAffA AVE - 621 DANA AV- * ', s -v WARREN OH 44401 WARREN CH 44491 ( ATTN: TONY SMIELD3 ATTN: -- PRODUCT: 17-4PH CR STRIP STNLS NO 1 7 .7 .INISH
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LBG PER SG IN ANGLE 0-COIL t !!C AT DIR COND - 2% YG 'UT5 %ELONG ROCI' DEND EMDRIT 400670 LA 100,000 160.000 10.0 C34 CK To 106,500 160,300 9.O C24 180-97 L H900 170,900 170,?00 1". 0 C4 2 N T H900 173,700 190,500 11.0 Ca L H925 155,900 179,600 11.0 C~?
. T M925 165,400 177,700 10.0 C29 L H1075 140,800 .50,500 10.O C25 7 P1075 133,300 160,900 10.O C35 L H1150 115,000 150,000 15.0 C31 i H ,. ., ,s 0 ,14, v.. > 0 .s.
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'T.!CATE OF CriEMICAL ANALYOES AND TCS~E
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7 AunCO INC. *-N DOX 600 SHIP RCF NO MIDDLETOWN, OH;0 4'~342 NILL CdDER NO SHI? PING GATS 0045400 Oc3907923-SCO2 10/03/eo SOLD TO: ITT GRINNELL SHIPrCD TO: ITT GRINNELL 621 DANA AVE
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17-4PH CR STRIF STNLS NC 1 .IMI5H COND A NO 5 GGR EDGE.: A A693-77 EX : PARA TYPE
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01 WIDTH LENGTH N E T '.' T THEO ',;T 2214 4 38 04010.,1.750000 C0!L 9.cas r ENG ri =RECERTI~IED TO CORRECT HEAT ANALY3!Sec:: hECHANICAL PROPERTIES LBG PER SQ IN ANGLE G.:
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T 11700 132,000 179,500 5.0 C43 L M7:5 170,700 130,500 11.O C41 T M925 173,700 131,900 10.0 C41 L H1075 101,000 165,900 10.0 C36 7 H107C 153,200 167,000 10.0 C36 L H1150 117,100 151,200 15.0 C32 T H1150 110,500 150,000 13. 0 C3 - '
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. 2. !i .i? .07 .27 . 01 SUBSCRIDED AND SWORN TO BE GRE ME THIS 177M DAY CF JANUARY ,1?31 THE CHEMICAL ANALYSES AND PHY3ICAL -. OR nECHANICAL TESTS
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. . se. c.2 s..., , s attached :c the clasp fra=e.
- 5) *4 reach tights: the hex. uts in sequence until the straps are
. . s ~- s~ a-='s- s. ee. ( s"-.~=. . .h a . . . ' . . ~.~.~.*...s ~. =. ~ a .* .. : a .~ =e' ye .u ..eh c 'e~. d ". .~ .' . - . .'. e .'3.....'.3
. - . -F . .- .c~c . - ess. . '.. ' s v?
provide equal force c each strap. '
- 7) ggi,- -s a .-~.".e v ~. ~.- -- % , 'g%.=-.
- a h. . x ---". .c . v e .. . s~ ,.e.-..-. *
.s e,- .u 3 :..-... .u. e u.. , x - u. a. . u. e
( - e.3n ) c .: . u. e ..q-: .d . .- . ns u e . 4 . . .. . oppcsite e d of tha: tie red the sa=e t=cus;. Oc=plete :hese s . . e, s . ~- =. a c- k ..' ~. *. e .~=~a--- '-*- 3 se.s c .' s . ~. = ~ -,s a . . = . '. . e d. .c . ' . = . . cla=p fra=e. g) 2.. ., , e a .-.t - - . s. e ses n e ce e .s s.. e x -
- - .s .: 3....
-< .s s.., .. ,, .: _.....- .-
.u e -
u.s .c . * . * . ~. =. ~s "- ' .- *. d . ~ ~. c. ~. e e g .. . . c." a ' s . ~. a ~, .=~s_'--
"s'-.
- 2 0 % .' .. c ~. *. - e .. . s . (.'-'s i
. ' . ~ ~ . " . . - ' . . . ~ . . . ' . . = = . ~ . ~ . ' _ ~ = -~- . .: 3 - .. =. '~~
s u-,, '
.--3 precedure). j i
- )
. .--*,c.- .- . e 4
4- u. (-) .- - -. _ ... ..a . .e ,.,-u ---.. . : =. .cd .- d . ' , . . . = . .
.-.'e
. . c. ". .' .~ ~. d . .- .- s ". = .
.c) .x . .,. u. .. . g . u. . e-,,s-,u,.
- --. -,-. . z e .- e .. . .. . u.. .. - az-
..e . . . . . .u. ..
lead pi: (3). . e Netes:
.)
. 3gg-_.-
g
.-s , a-. a. . .k. e 4
.cM--r-.. J
-- .- .- ...g .
.-3 .
.e--... --M.cgss,
- c. . ...g .
- s. . . ~ ~ . -'- - . .. s ~ ~ .*. . '- e ,a.-=--=- .~ = . . = ~ . ~ ~ . ...'.e..
- . . . %. . .' s v _ c ~. *. v =. .. .
.u .ss * *r ss--
- I*a *
- a * * ** h **
- d - s*~=r s =-' =-~
....r., - -- --
a - ./ *- *"* * * * ** "" * * * - .
- ~ * * -
se-ss-----s
. .u. e .." ...*. s u ' .'. c ". ' '- .~ = " s e = s . - = e- - =1*"-.-=..
* ** /
f 9 g . .I ..- . .8 -N* $**
** d* ****
2 .. . u.. e m. . . y . . .u. m. .I 5..
.=
.="b *
- s**=r s. .e .
*s A6-2
q,4 Notes: (cc :isued) ,
'2) . are allowed to be touching each c:5.er. Contact between the trussicas veuld negate the effect of the applied crque. There
=ay be sc== =iser defer:atics of the trussion;,:his will is no way affect -he performance of the c 1'a:p .
..1 RIOUIRID TORQUE VALUIS 4
' ~
TRAF.I S:II ToROUI'VALUIS (TT.-L35.)
. O b
2 . 35 3 ' no
.$ 4O 0 O
o . 130 5 170
)
% e e 8 e
e e
. e e
e e e e all A6-3
[7'" ASME SECTION 111 8
-Pl c.$. 4 SUBSECTION NF LOAD CAPACITY DATA SHE'ET
^
- l. GENER5L INFbRMATION' ~
SUPPORT NAME: ENGINEER.ING PARTS LIST (S): PE-41 Pipe Clamp A-PE41-00000 Size 1-6' UPPSS Units 3 & 5 . SUPPORT TYPE: component Standard CODE CLASSIF.lCATION: Class 1,2 , 3 611 DESIGN PROCEDUREil . cad Rating -
. DESIGN TEMPERATURE:
6500 SERVICE LIMI-TS: Levels A,B,C,D & ' Design Loading- .
- 2. CERTIFI CATION ENGluEER:: DATE: THE 'L'OAD CAPACITY OF THIS COMPCNENi-SUPPORT IS RATED IN ACCORDANCE WITH
&(.1m-
/f .
')-3s gj SUBSEC i O N.:.N E -... ..
Y i:.? M.I.T c. :' u.~:::c: ?- s CHECKED: DATc5 l,: - ,.:.. _.. .: :.
' .s - -
1-Y- h. D- b 2 ' ' g, '@k ,, g) - d;r LOCAT10N OF SUBSTANTIATION DATA * ::: . . , . . . . . . . . !l Research, Development & Engineering : : Pipe Hanger Division, Prov., R.I. REGISTbRhD PROFESSidNNbENGINEER i
+
- 3. REVISION AND RECERTIFICATION .
-~
LCDS EPL LOG SH- DATE RECERTIFICATION
- DATE REV.NO. REV. NO. .
n
'2 1/30/81 L -- t /14 [p.I _ ., ,
a s/1/a1 -- q; .4 13 , ]( j(Q u tof m a2 m In le i I A J ~ L ,i\ -
~
l .
.. ~~ ,
e m
.e ege
_ N I ___ s .
!I il 1- '
-( -
1 I _ _ _ . A6-4 - L
- Rcv. 4 ASME SECTION 111 I SUBSECTION NF ,
'4. CCMPONENT SUPPORT INFORMAylON .
MATERI AL SPECIFICATION ANALYSIS IT E.' ' . p SA515 GR 65 10 or SA36 Load Rating ,f
, t Trame -
SA 193 GR B7 or SA 564 . L.
^
Load Pin (Except S:. 35 rig. M OS50 _- SA 5% Type 630 Age . Load Pin (S z. _3 5,, Fig. 306/307) Hardened.@ 10750P Load Rating
~ ~ - - SA36 or AISI 1010 Exempt Spacer . .,
pe.r !ir 2121 (b) Secondary ,
* * 'fe n b e - _____
Truarc @ Exempt.per
~
Retaining Ring NT-2121 (b) Load Rating SA 193'GR 37 Lead Eating,
^* ,
- Strap Pins' ,
. ^
ASTM A 693 Type 630 , Condition H 107500 Load Rating
- Straps ,
s .
- SA 193 GR B7 Load Rating t .
Trunnion - - -.
' SA36 or,C1018 Case Hard-ened to Rockwell C-35-(b ); Load Ra t ing ;
Tie Rod.Wacher - 38.Exemot ner MP?171 SA307 GR B or ASTM A307 . GR A* Load Rating _ Nuts ," _. SA 193 GR B7 ,,oa d Rating Tie Rod's -
;oad Rating AMS 573766 Rivetd -
^
~
~
~
A Code Case 1644 h' [ 4h Pending-Approval of"ecdc Cace !: 11 and :-249-2. l_
- i I -,
- A6-5 - ...- . . . -- .
. ~. __ _
- PE-41
, i STIFF CLAMP
, REV.4 N -
-l
, i ITT GRINNELL PIPE HANGER DIVISION
, , , QUALIFIED PRODUCTS LOAD RATING
~
[ . FRAME SIZE MAXIMUM LOAD LBC. MINIMUM SPRING RATE LEVEL LEVEL KIPS /IN LEVEL - A&B _ - C D 1 . 6000 8610 - 11520 ' 325 t). - 2 6000 8610 11520 325 1 s l
'3 -
6000 8610 11520 - 325 l
- l e
* .i 4' 20700 ,24~340 26700 1000 *
. . i I
5 20700 24S40 26700 , 1000 6 20700 24040 26700 1000 i a
~
a l . i , - l l 1 s A6 6 -
. em. ee# .. ..ey.- e e . .
1 R EV .14 dS
~
I
#(' N 5* , . _10*
f
, ' %dV r s 'i _
1 4 l x
~
$/
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.,[ .
j \ i t T"" ~
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3 g A 4 _ __ ._ _ _ _ _ 4 fi _ i >
- ?,
1
-0 .
I I . 5 l E 4:,, '
/g [ -
-E-_j : cj ]/
f x v v
//
.\ -
. j
= ~
s i - . - ,
-1 +
g_Y [ .;_ _ . y .. y
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f t @) (q }* 3(r,
- 6 .
s- C +
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e *
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\
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q
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- A6. -7 . .
y . -
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& O APPENDIX #7 STIFFNESS AND QUALIFICATION TESTING OF THE MODIFIED FIG. 215 D
STIFF CLA9. O e 9 e
4 1:scuss:os .
=-- =%
9 .~t .a m1?- - . . t - - g . . c g A .. . ..
.--s ... ~~,. .tg 2 . S .ts-.. ...) ., ,
C .. .s.sg%
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4
&.g A w.tg.2.n. -- =
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--g. . .tg .C e a.. . a.ue 5 . .t .2 2 . g $ $
.e.2
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.~...
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.~
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y -k _tC % .. ..ggf.e3 C.g. .
.., - -- . n.1,.7g w.- ,
o.ggA - gg .s
.*g ..
-w- .t...gog.t
--.. . o...w.s.e..
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.s
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- - ."4. a S S e " .k _' */ S .b. a ' '
a */ e as a
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. .'. a - ." .# v a.
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- S
-. .'..m
. S ..#.s . = . = . C .2
_s s
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a.
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y... ... .t o. g Aw 3 .b* *C . k. E. 8 S S e ~" h .i7 . .
.be f' " .h *. .
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-> g s a, t..
sSse-u,7 ... ,....-- - . . e,.-s %.g.,... ..- .- ..g f..y.. . a.s .ue e.t ... o uv. . t ,
.e :
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g-z ... .-..u. n.,g i
.- -.. . w -
f .ts e.x ..>.ge . ...
+
.e
.- s ...,
.w
-.a......
.. ,y . , , , .
e,- .
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***s".I. -
- q
.S g g g- - .I... g M. _$.. E C.E e.be .-
3 .g
. g .m . .. . . .. . 3 g 3..3A. gM. w.
. . .. .. .t e. .
O. .M..g.. g
.g .h g. ...A..g q e.. 6
- k. e g Tkgh.-
...g. , .. . .
77
.. h. e. .g 1. - .h e g e.'g e g g .,.y f .. .. 4*gw
- d qq ..t".f =.%g *s ..g=. .1 e S.t . E=
.. 7 . ,. . .- . ... *n.d.) 2.-
..e
.n 3
. . - 2.g - $.4 g (..s.
. gr.g . -
.J o..s - g .- rf .t.g).
..y .s.
-S 3....d % : .j .t . .h. .t..
7f.. - .3 .b.=. C 3
.J o..s - e S .# .* e ". b a. .- =. .#3 .****
. . ,r *
.-- r .=
c #. 2 .h .? =.
..b.t e- b .g .t .9.T g.J.e..
J.. . =.b.. g - e..-. . . e. . J ,. . . .. g).
* .h,.t
. . .. . ./. .
. .t3, ., ,b, g 2,* 3...
2...
.... .. . %. e J. .t . e. =. .t.-. . .2 4..*77-=.A. !. 9
==gw
. d q n%. .. .. . . . .a. . g=. ... s. *
. g 3 =.
.s =. =. .s ..
., .6$ $.,.,. .
.f *I....
.e-.
. ~ = .. g...TagJ
==. .* * * .*g. 'e .I S- e *#*
. . , . . * . M.
. ** =.~b. S .. ~* *7 ..-
4 3 s. .t .o ., a. .g.,,s.s g ----- ..
. u. .
.. . .s rg- .'.t,; ..
e
. g;-, .:--.. agy.. ...:
, - -s.
2 3 3 **
- e .k.... .&- J 8 3 3***y --.d #a - *f ... = . .I s**.*
J $ *** .~. 2 **I
--s-.a .J =. . a. - -
...*#=.s' t..
e-.... . ., S , 3 g ..g . ..*.g= J
.t . . . . . .e..s. -
- g. 2....
-...g.
C.*
. .- p. . m. - .. . . . . . .. ., .....,d.,
5.J. e A7-1 *
----------j fer it. 3ecause :ho deviatics free vertical is largos: !=r :ho largest pi;o si:o 1: the 'ra=o si=o a:d thc: ::=hi arion ef~fra=o and
- x. . p'pe size would require the larges pre-icad :s =ee- the sti ness.
l And, since the variatics in pip.e si:e vi:h'i: a "ra:e size is ac: th2: great, we hav's elected to ser cae :crque value per fra:e si:e ' based c: this vers case. f
=
s '-
. 'm e -. .. ' . e .- a _' _- '
. -- .=.s---.- '
s .c e, .'e _ca~ ' d .a._ ' quire =ents c' ASMI Sectie: I!! Sub'sectics NT. he de this the cit =p used i: establish the :crque value is subjected to hc h tensile a:d ce=pressive lead estil 1: ' ails. Then :he failure lead is f ae:cred -
.- ac
- ..>a -.
~. -u
-e . u. , . s c.s 4. v.
. .. 32a.0.
- The effects of ther:a1 expansica have been evaluated analytically g->
-- .a.
=- z.--- 2-, .sg c c - , s . . e.
- -. .o- - ..-. . , a..ge ,a- .. -
, , e .- . . 1. , .z- -=e
;_ se.- .s . . - ..i s . . ,. c . . . .u. .
. - . .. . g.-.ss
-'"c d
-- . '."e .. .'e '- .' ' .' . . =. ~ ~.
s 6 a cu-. = ~. ' e . a ' =.x,a
- - s'a- .. '..'.=. .o.,.'--s a-'
-- .'=. 's-~
----, - a . =.. .' a ' s
.a"ses a- =d.'- - - a' ....s =. s.-.ss --
'- . - = - s' .. a ' s .
, T-=~-
o = v a ' "- = . m .- ' < v .' . '- .'s **==.
- ... .s o .' . ' . . = . ae.='
o - e. a .' =- s...ss = - --' - -~~,a.=.^- . . - - ' . -- a,,ua,,, -
. .s..- - . '- ' s -~a..'.-~- c ' -s. ' ~ a .- r ( - =. c ' a ' a ' ) =--
see--^a..r
.- (.'e- a')
-. s.-.ss,
. .' e -.su'.s s' v . ' . = . . ' = . .'.a--=*
stresses ind"etd are acceptable. 1
- w e ~,
e b A7-2 l _ _ _ . . _ _ _ _ _ _L
A .: ? ?.C H 3 37: /A' I cA- : G '/ P / /
-e.
.-. . .e.C C -r 3 L*R. .7 6n..-
. ;. :.=
..o. ..c 4..
36 . .:C .r. 4 .u. .y .
- - = ~
y~r J 2r.* :..2 0 5 -v ~.~ % e fm .t.- m,C s e n- .2 ~. -
%ts .ts
....ceA....
. -o.. .s . .%e l
. e s ~. .' s- c .~ ~. % . e - **c I
r c d ' .' ' e '- .= .' s . ... .t..'.'.' ". ' a - ~,.
-*-% .sS .1
- E. ..
.s 3 C A% .t .a .t.-. ; .c Zss-W e
. u.
.. . .J....2.
- .g.. ..:-- y z t ..- g g
.--s g. . %. g .:q
.. .e.fg g.a -- .. ..:g.g
- w. .% e S. .
s. f &5$e ----.S. bt t. -%:3 . c d .J .r . 3...7.. w.. %4
- St.-.- ..
-- .%e
.. .... .a. . u. . A.
3 d *..... b=G*
~.--7 0 . . N. G .A. .: .: .2. .:..A . "w S . .~%'.'..'a. ~. .~. s .' .' e . a. s . .v. a w o k
.' - e, V. . d.e-
- ,re- , l
.r - 3 .wwa, .n.e. ww reo 2-
-,. ca ac2.y, 4 . . t. a ,
r . -- 2 -. Sy. e r. . 4.-. . - . . . s. wCt
~ .
7, .e ;
- 4.1 o,.-s ow_ e ;
...sa=ma.6..z.
. .res . :. . - c s. ..
-- .'e c'=~~, s '.. a ' ' 'e s e . ". .- =. ^. -* .- a. u d- - .= ~, .' e
. I P
S g .~ C ' =-' --
.'..'.=..O ** - -- '~ *
..'X.'..-*.. ~'t
.- .' .' X . ". .- *.
2 '. . J .. -b 5 E . . m --.- .. -e . ...
... .. 3 .% .i .. s.. .--3 ..A .: . %. .. .5.
. S
- . u.. -t . e *..:-.% _
... EA - .. A. ,
S$e %=
-- . 1 ggst2 m.e. g. ..) .!$ .* .se.)
-- .-. g w., .t -. .- .%y g.,.t.-.. - .l 7
% eda. ...:
-u,
- ... .d %.t.e E.A .t3 d..,,%.?.
. - - ....-. .. . s. ..
;-y.
.. .' .y ,-.. .e.. ..
.r .ts ... .. .
5
, w g.
.s .g
. S....S .f 3. . S . . . . . . A.
.. . .w. . 5 .7. C .e
, .~..s. f
.1 . . .J.g .-a. . . %.
.. . .- -. .g. . . g ?. . z .f. .3....-.2..;
l
,,..... 2-
... z.... . - st z. . . . .,.. . , . , . . , ..
...S.
-- %e
- ..sp...%.) ... .t .. 3. .* .2 . . ,.* .% . .t e
- g. .
d A. . .. .g.. . . . - .
. . . -. .g X g.
.. . 3 e. . g.$. g g 6 ..g **
7,.*.....
. %..s .. . .
3.4a--g .s . .
-g.
- 7.- .
. . . . , . . . )
". -b *.l e g . .' ' i
..g....
.- .. . . ...r.. 3 * .s .= .J =.= =.. =. ... - =. a.... e .! ... -.
...g L-- ... $..g .$j. 7 A7-3
* =. 0 C . '.--~=. ~ .
- 1) *he specimes shall be leaded and : rqued.
- 1. t .
? as described is the test,se:-up.
- 2) A 100 lb. pre-lead shall be applied. .
A check of the basic s e :-u.s a:d dial indicators shall be =ade to e=sure proper
. fun.ctioning during the test. .
. -c
- 3) The 1:adis s shall be s::::ed sui :he indicator ..
readings shall be taken a: a prede:er=ined value and a: the faulted lead to :es: for stiffness. (Duri:g Icading, a visual check shall be deze to leck fer cla=.= - pipe separatics). -
, 4
') Upc u= leading, the :crque values shall be
.ahe- a> ... n.
- - .. -.- - a. . a .
*)
. .4 e .u.- .. 4 .%. e . e .s s..a.a.
.. o u.e : -.
. .. _ e
, u,-..a, .- _,.aa :
.s .-,a .> ...
---, c,. .e s . .: .:.= e s s does sc: =ee: the required values, :he s .. , sf a .- =. . . . .- - s.". e d . - a. i. .' . * . a..-. v a .' ~. ~. = - ->-
.u,
.- ..s. ..,,z..s.. u. s , yo,< u
-- e g .e .
. .a,- . u. ,
. -,z-,, - .e..s , , .
. . -.. e...a. .
=c -,a-.=-k'.. .as.
.a.su'.s. '
s) ;-..--- .- .e
- e s ..- . s. .- . s " -'~. s . = . ~ = . .~ -- .-
.=-e?,a
..y e , ., .,z-r s .. z , . -
.. . , g . ,. ;.
.. . . - , . .as---- ,.
~.~~.,u=.
. v = ' " ~. s .
-*'s 6-- ~. =. s . s'a '
- _e .~~~d..-~.=.>-
.- . -'" y--.a.=.
. .=..'.
. ' ..'- se
. . A'~ --
=f.=-.'= .
.- . s " '-
-. s s. .-' =. .'-.=' . =/ -- = s'--s '
.=s..
c-e
,. A7-4 l
- 7) Tho sn=pto : which acceptablo s-iff:cac recul:s were ehtai=ed will ==w be leaded i: e:sion to
.-=...
M. . '
.aa s -_.. .. . . ag
. .u,. .= a< . -t. .. . <. .. ag .--- -. u,
..t$,
. en- a-.. ef .s.--.
t
' ~ad
- - .=.#~~ -s :u .- ,o s e s .
- 8) The ec=pressive data generated in previcus qual-
..::c z . c . ,.s-*~.~ .' s " ~._ a .= .* =. c ~. =. ^-%'
./ ~. ' e ~cd'"'.a. --e~
-~ des's~~- a~d s ~.'.e~=.."-~.=.
s ~- ' ' ' v a ' ' '- .' c . se. J 9
. . . e
$$ .a w
e . emme e N
.a j.
A7-5
Y CONCLUSION
- m. . y
~att As ca: b'e seen frc= the test results obtaised is all cases, we were able .to =ee: the stiff:ess require ents of :he 'projec Desig: Spe:ification, and also all lead rati:g require =ents of the code were also =et. A ?. s o , the analy ical data generated to s .
show the e #f ects of ther=al expa: sics of the piping . shew tha: this secc dary stress will caus'e no functic:a1 proble whe: ec=hised with :he applied secha:Ical effects. O est I g i ! s t e ' , . l.?.$. e A7-6 . 1 i s 1
-- -,_-%. , ,,,,.,.w-,. r ~ . ~ , - , - , . , . . , .,w~,,,,.. .,m,,m-wn,.-#p,w,,, _m_.--,,,m.,mmy.--,,,y,,,,,,,.y,,,_,w_m,,.,_,..~,7,__._.-,,.y,,,,.7,
T T 9,r . ,: ~- r.<. Cn . vs reca e.cmtasc ems:cu
- n. .
.....z.....:*rfM'f(.. s a.c:- 6 4 2. s ,pgoc,7ger . , m ,,, , g , , , ,,, g ,
> :. sv .[d'2 . . :4 r.NN/. . :;s :=a . .. . . . .. sys tu . . . .. ,, , ..
N >=c.e:- ~e.e: .sc. J.::; .. . . e *
~
U Y ulf x;e J/adsN5JYZ
'J,= 32 s 2. 4
& t/EL. A .
f/NWZ ' LM UsJf = 7*4. Y /= E4u. .Sw l
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t 5 4 ATTAGMENT 8_ FIG. 215 STIFF CU S P.0DIFIED DESIGN TORQUE RELAXATION TEST 6 j?
A??20VID 3Y: / Mew h _
/
DATI: 7-/S-?/
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Furpese: The purpcse of this procedure is for res-ing of the = edified 7 .' . . 2 *. 5 S . _' .". c _' a - p d e' . e . .' .. e **
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sary to insure the rec.uired : rc.ue to =aintaic the s.oecified s s=.= ess. Testin- Apcaratus: No special e4uit. ment rec.uired other than a cali-brated :crque wrench. Tes: Se:-Up: The cla:p shall be secured around a pipe spool and i s. ) .-.3eg . : __ se..->.a- . . e v _z . u. .u..,. a . . _, es... . g ,- . e 3. . . ,. .
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a) One ay
.:) .uc ways -
c) One aeek *~ j s .
- ) sWe ..s e e .< s r
e) Three 'J e e k s - - A
.S ') ue m
.*g. C q =.* .
t l e g) .gg V. . m *. h g 3., ..= ... -'
. ~ *. ~ . - . , ~ . = . -= _ ' . . '.es -..
=. .o s ". . . = s s .' , =. -== -
..a-3. . . - 3s, ..a
. ;f:E M 4 E
-- - O...M.... g. 4 g
..8..<. O N
- 3 . . . . . ..-- .
*s .
= -
5~-
- r RISUlTS e.
Dm - . 0:e cla=; cf each strap thickness gycuping was asse= bled in acccedance with ~;he attached precedure, because the sa=e pre-lead . is applied c the cla=p ycke by the straps withis that grcup (i.e.,
' e the faulted Icad re=ains the sa=e with a frase grcuping). The res:
results show tha: siner relaxatics (appecximately 10%) ca: be ex-pected with the 0.040" S raps and the required crque values have this a=ce:: cver the crque necessary Oc see: the required stiffness. On the 0.080" straps se relaxatics was detected. r o...s.. _v. e S- r_
!=itial Tcrque: 25 T .-# - After c:e day: 22 F .-#
.. After two da.vs: 22 7:.-! After cae week: 22 ? .-# , After tvc weeks: 22 T:.-#
, s u. r.
. ... . e_~u-r a
- itial Torque: -
120 T:.-# After cae day: 120 it.-! After :ve days: 120 T .-# After c e week: 120 ? .-# a.:. . . ==- 9 9 O A.*4
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]f.f:9- , s_ < ATTACMENT 9 FIG. 215 STIFF CLOT
~
MODIFIED DESIGN ULITMATE TORQUE TEST //
2 ATE: / b ~(f- f#/ s TIST PROCEDURI ,
.- . e. . 25 S . . e. r.
. C .e A .w.,.
M- .
. a.
UL.r.v..A.r_ . O =.0
. 0 v_
6_ s-5 f. Purcose: The purpose of this procedure is for determining the torque
=ecessary := cause the failure of a strap asse=bly of the .
=odified Tig. 215 Stiff Cla=p.
Testing Accaratus: The a 17 special equipne: -seedad is a calibrated *
- orque wrench.
Tes: Se U: The cla=p shall be secured around a pipe spool and - placed is a res; fixture. When the straps are secured c the spool, he strap 4 =us: be :orqued by rightening one hex : : 10 perces; of the required :crque, the tightening the hex su: a: the other end of the tie rod the same a=ous: then proceed to the other :le red and righten si=ilarily. hen repea this sequence using 10 perce=: incre=ents until a strap failure cecurs. Record the failure leads. Cla=os to be Tested: Tra=e Size Pice Size
- 2yn .
o-n 4 r.n -
~
2 *4" 4 3" s . s"
. 5 -
tu" Note: Te expedite :he testing is so=e cases := si=ulate the res: for -he s=alles: pipe size in a fra=e,
, the larges: pipe c: :he fra=e i==ediately pre-ceeding in si:e was used. Ter exa= pie, ::e fra=e size 2 esec= passes the pipe size range frc= 3" thru
~4", :c si=ulste the tes f=r :he fra:e si:e 2, 5" pipe; we :e s t e d- :h e si:e i fra=e with straps for a 5" pipe. This is a represas:ative exa=ple because
, of the =isi=al difference is length.
s-e-
- il e
A9- 1
.rzt % g:. J: .
.s.. S U . _u.s U...,s.__ _,,
C _. u . . . _ .v.. L. _ ._ __S_.
.e g.g..w.r. . 3 -2r .g.r. Q g . .s..e. g
.e A .r. g .e..r .r.2. C . 0 c. O .e
.e . & r S vr. 7 N S i A .r.e A e n. N $ 0ROUr_
-n2..QUe iw S A .e .r. v.
1 2h" 25 F .-# 170 3 6.5 1* 5" 35 "
- 300 " 5.57
*hn .gn g G, n hn 6 . *og n
. . . v, g 1M e et
. os a. 395 s rs e.
s .<-
'?
4 5 "' 130 "
- 400 ' 3.03 I
5'~ 14" 170 " ~* 3C0 " 1.75 !
- s C .Re-.ase- s ,' e .?-=
- 2" e - - - .- e s - -
.' g- e
** Re: resents the Tra:e 3
- *5" .ti:e
.=.a-.e .,se .s ' =- .T . ae* . -
.= " f' - , e
- x. s ,- . . s e - . g
. .u,
. .e-,
--- , =. -
. .- n .2,,
I f
~
Aheve r e s u '.:s sh:t that, if -he instalia-ic: ;reced.: es ; : -id =d are folieved, :ha: signifi:an: sa f e :-/ argi:s exist. e A9-2
s _ c 3 A".IAGMENT #10 2,. FIGURE 215 MATERIAL GANGE-0UT PROGR.Of FOR WP-3/3 PROJECT . t
.=
L.
FIGURE 215 MATERIAL CHANGE-0UT PROGRAM .q, . FOR WN?-375 PROJECT ./Y ,
- 1. 0 SCOPE This progra= shall be i=ple=ented to affect and docu=ent the change-out '
of all nonconfor=ing ITT Grinnell Figure 215 stiff cla=ps for WNP-3/5 Project as identified in NCR No. 14020. 2.0 CLAMFS IN VINDOR SEOP
'_o For cla=ps which have not been shipp'ed to site and require replace =ent parts per the new design, ITT Grinnell vill perfor= this change-out prior to shiptent. Cla=p straps with visible edge tears will not be shipped to site.
3.0 CT_ AMP ASSEM3LIIS AT WP-3/5 SITE 3.1 GENERAL 3.1.1 For cla=ps received at site,' the progra= for identifying,
- acking and verifying tha: all nonconfor=ing stiff cla=ps have been properly changed-out and docu=ented will be as
, described below.
=.
3.1.2 A listing of all stiff cla=ps at site vill be co= piled by the Enginee'r and ::ans=1tted to :he vendor in order to establish quantities required for replace =en: =aterial. 3.1. 3 Upon receipt of this lis the vendor vill ship all replace =en: parts required for the = edified cla=p design based on quantities established fro = the above list. All replace =ent parts vill be shipped in bulk fer= as "=aterial", and vill be segregated by type of part and corresponding cla=p. size (i.e. trunnien for Figure 215 cla=p - si:e 4 for 16" pipe o.d.) . All replacenent parts shipped by vendor vill be acco=panied with proper docu-
=entation.
3.1.4 Upon receipt of the vendor replace =ent parts the Owner /Ingineer vill assure that all =aterial and corresponding docu=entation has been received and processed according to accreved si:e - procedures. This infor=ation vill be entered into :he site cc=puter progra= for tracking purposes. 3.1.5 Upon final acceptance of vendor replace =ent par:s, che =a:esial change-out process vill proceed as described belev. 4.0 CL.ed?S IN ~4AREHOUSE 4.1 For cla=p's curren:1y in the varehouse che Owner / Engineer vill assure that all ec=ponents and corresponding replace =ent parts have been
- changed out in confor=ance to the latest cla=p design and in accordance vi:h the vendor's wri::en instruerions, and : hat all inspection, docu-
=entation and verification for this operation has been perfor=ed and accepted by :he appropriate personnel. All nonconfor=ing cla:p parts A10-1 . . - . . . - _ - . - - . - .--
fron the old design : hat are no u:ill:ed in the =odified dasygn " I j vill be idan 1fied and surplused after changa-out. - /7 7
~' _,;.- [ #.
, ~
4.2 In addition to the process described above,.efeh cla=p strap will ,7 , M{. = be inspected for evidence of edge tears at the ti=e of-change-out, ' and any scrap found to have such indications vill be identified and s returned to the vendor for replace =ent. Inspection for strap edge-tears will be by visual (unaided eye) =ethod only. ,
~
4.3 The . existing c:stallation procedure plate affixed to the Figure . 215 yoke body will also be re=oved. Re= oval shall be in,a(cordance
~ with the vendor's written instructions. ,
/ ,
4.4 The =echanism for assuring that all required actions have been co=- s ,
-s pletsd for this change-out process vill be.i=ple=ented through the use of a.=anual check list. This infor:ation vill in turn' be eftered -
into the site co=puter progras for future tracking and =aintenance of a history file. Upon co=pletion of each cla=p asse=bly change-out 4 s and final check list approval, the cla:p will be acceptable for iss--
. uance and field installation.
5.0 CLAMPS IN FIELD - 5.1. For cla=ps which have been requisizioned in the field, (eithes installed $ or.in contractor storage), the installing contractor vill be ret ponsible for requisitioning new replace =ent parts frc= the Owner's wareh'cuse, assuring that all cla=ps and corresponding replace =ent parts have been changed-out in confor ance to the latest cla=p design arid in accordance i.. , " with the vendor's written instructions, and that all inspection, docu- c
=entation and verification for this operation has been perfor=ed and accepted by the appropriate contractor. personnel. All conconfo'imini parts from the old design vill be identified af ter change-out of each t cla=p and returned to the Owner / Engineer's- varehouse, m 5.2 Each.cla=p scrap will be inspected for evidence of edge tears at the ti=e of change-ou:, and any strap found to have such indications vill be returned to the Owner / Engineer's varehouse for replace =ent. Inspec: ion for edge tears will be by visual (. unaided eye) =ethod only.
5.3 The existing installa ion procedure plate af fixed to the Figure 215 I yoke body will also be re=oved. Re= oval vill be in accordance with the vendor's writ:en instructions. 5.4 The =echaniss for assuring that all required ac:fons have been co=ple:ed for this change-out process will be i=ple=ented through :he contractor's use of the =anual check list described in 4.4 above. Upon ec=pletion of each cla=p asse=bly change-ou: and check list sign-off, the ins:alling-contrac:cr will forward a copy of this for= to the Owner / Engineer for verifica:fon and closecut of NCR No. 14020. 6.0 CICSE OUT Upon co=pletion of the =aterial change-out progra= described above, including g;,. final acceptance of all docunentation and verification packages, the Figure p 215 NCR will be closed out. m i A10-2 ; i l
-~~g e v 1 y p y r yw - g w v t wwwow -tv--,----ey-e , g w, .,r+.-y--v--rvmy- w-yw --c.-= r ar e , v e + m- ve r- a g w me v," c- f *-ey ,---+ erw < e a w -w m' w sere- wee-r w e e ww w e * -r t-e+e1-iv s ev-s me ==- e + w * +
5 J
~
e ATTACIDfENT 11 CROSS REFERENCE ITT GRINNELL AND WNP 3/5 ENGINEERING REPORTS b a
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e e O e t l . 1 l
's '
s I l
Y CROSS REFERENCE , ITT-GRINNELL & WNP-3/5 ENGINEERING REPORTS ITT-G WNP-3/5 APPENDIX ATTACHMENT ITT-Grinnel'1 Installation Instructions . Fig. 215 Stiff Clamp - Original Design i 1 Site Non Conformance Report 14020 3ased on original Design 2 2 Photo of Trunnion Damaged During Torquing Causing Tie-Rod Bending 3 ---
--~
Torque Testing of Original Fig. 215 ~ Stiff Clamp to Simulate Field Failure 4 --- Photographs of the Revised Trunnion Design for the Fig. 215 - 5 --- Stiffness and Qualification Testing of the
- Modified Fig. 215 Stiff Clamp 6 7
=>/ Fig. 215 Stiff Cla.7p' Modified Design Ultimate Torque Test 7 9 Fig. 215 Stiff Clamp Modified Design Torque Relaxation Test 8 8 Mechanical Properties of Strap Mr te.-ial 9 5 Results of' Strap Inspection at the Warren Plant to 3 Aeroquip's Metallurgical Analysfs of 17-4 PH H1075 Material 11
'Results.of Stiff Clamp Strap Inspection at the WPPSS 3/5 Site 12 3 Aeroquip Corporation Manufacturing and .
Inspection Procedures 13 Revised Installation Procedure for the modified Fig. 215 Stiff Clamp 14 6 Typical Material Certification 15 4
._ Fig. 215 Material Change-Out Program 9 For WNP-3/5 Project -
10 Cross reference ITT-Grinnell and WNP-3/5 Engineering Final Report -- 11 ,}}